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3 years ago

PLEASEEEE HELPPP!!!!

Mathematics

1 answer:

CaHeK987 [17]3 years ago

5 0

Answer:

The slope of this line is 1/2.

Step-by-step explanation:

You have to pick any two coordinates from the line. So I will pick (2,0) and (4,1). Then you have to use gradient formula :

$m = \frac{y2 - y1}{x2 - x1}$

Let (x1,y1) be (2,0),

Let (x2,y2) be (4,1),

$m = \frac{1 - 0}{4 - 2}$

$m = \frac{1}{2}$

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Express 100,0000 as a power of 10

marusya05 [52]

I believe it is 10 and however many zeros there are and there's 6 so if I'm not mistaken the answer is $10^{6}$ .

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3 years ago

Read 2 more answers

Find the surface area of the following cylinder. Round your answers to the nearest tenth.

Katarina [22]

Answer: 628

Step-by-step explanation:

2πr^2+2πrh

2(3.14)(5)^2+2(3.14)(5)(15)

2(3.14)(25)+2(3.14)(75)

2(78.5)+2(235.5)

157+471

628

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3 years ago

Having trouble with add or subtracting the given polynomials

Bumek [7]

(2b^2+7b^2+b)+(2b^2-4b-12)

(9b^2+b)+(2b^2-4b-12)

9b^2+b+2b^2-4b-12

11b^2+b-4b-12

11b^2-3b-12

(7g^3+4g-1)+(2g^2-6g+2)

7g^3+4g-1+2g^2-6g+2

7g^3-2g-1+2g^2+2

7g^3-2g+1+2g^2

7g^3+2g^2-2g+1

Hope this helps!

3 0

3 years ago

Read 2 more answers

Pilar says that two linear systems below have the same solution. (see picture) Is she correct? Explain.

wariber [46]

The first set:

3x + 2y = 2 ---1)
5x + 4y = 6 ---2)

From 1), multiply all by 2, 6x + 4y = 4 ---3)

3) - 2),

6x + 4y - (5x + 4y) = 6 - 4
6x + 4y - 5x - 4y = 2
x = 2

Sub in x = 2 into 1),

3(2) + 2y = 2
2y = -4
y = -2

(2 , -2)

The second set:

3x + 2y = 2 ---1)
11x + 8y = 10 ---2)

From 1), multiply all by 4, 12x + 8y = 8 ---3)

3) - 2),

12x + 8y - (11x + 8y) = 8 - 10
12x + 8y - 11x - 8y = -2
x = -2

From this x value alone, we can tell that these two linear systems do NOT have the same solution as they meet at different coordinates.

Hope this helped! Ask me if there's any working from here that you don't understand! :)

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3 years ago

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Consider randomly selecting a student at a large university. Let A be the event that the selected student has a Visa card, let B

Tems11 [23]

Answer:

0.75

Step-by-step explanation:

Given,

P(A) = 0.6, P(B) = 0.4, P(C) = 0.2,

P(A ∩ B) = 0.3, P(A ∩ C) = 0.12, P(B ∩ C) = 0.1 and P(A ∩ B ∩ C) = 0.07,

Where,

A = event that the selected student has a Visa card,

B = event that the selected student has a MasterCard,

C = event that the selected student has an American Express card,

We know that,

P(A ∪ B ∪ C) = P(A) + P(B) + P(C) - P(A ∩ B) - P(A ∩ C) - P(B ∩ C) + P(A ∩ B ∩ C)

= 0.6 + 0.4 + 0.2 - 0.3 - 0.12 - 0.1 + 0.07

= 0.75

Hence, the probability that the selected student has at least one of the three types of cards is 0.75.

5 0

3 years ago